ML12325B112
| ML12325B112 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 12/03/2012 |
| From: | Mozafari B Plant Licensing Branch III |
| To: | Pacilio M Exelon Generation Co, Exelon Nuclear |
| Carolyn Faria, NRR/DORL 415-4050 | |
| References | |
| TAC ME7981, TAC ME7982 | |
| Download: ML12325B112 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 3, 2012 Mr. Michael J. Pacilio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO RELIEF REQUEST, RV-04, FROM ASME OM CODE ISTC-5150, SOLENOID-OPERATED VALVES ASSOCIATED WITH THE FIFTH INSERVICE TESTING (TAC NOS. ME7981 AND ME7982)
Dear Mr. Pacilio:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated February 15, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12046A334), Exelon Generation Company, LLC submitted a relief request from requirements of the American Society of Mechanical Engineers Operation and Maintenance Code.
Specifically, Code ISTC-5150, Solenoid-Operated Valves for the Quad Cities Nuclear Power Station, Units 1 and 2.
The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on November 15, 2012, it was agreed that you would provide a response by December 10, 2012.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact Carolyn Faria at (301) 415-4050.
Sincerely,
~
Brenda Mozafari, Senior Project Manager Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION REGARDING QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 RELIEF REQUEST REGARDING ASME OM CODE 2004 EDITION DOCKET NOS. 50-254 AND 50-265 By letter to the U.S. Nuclear Regulatory Commission (NRC) dated February 15, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12046A334), Exelon Generation Company, LLC submitted a relief request from requirements of the American Society of Mechanical Engineers (ASME) Operation and Maintenance Code.
Specifically, Code ISTC-5150, Solenoid-Operated Valves for the Quad Cities Nuclear Power Station, Units 1 and 2. The NRC staff has been reviewing the submittal and has determined that the following additional information is needed to complete its review.
- 1. In relief request RV-04, Section 4.0, "Impractically of Compliance," the first paragraph, first sentence states, "Pursuant to 10 CFR 50.55a, "Codes and Standards," paragraph (f)(5)(iii), relief is requested from the requirement of ASME, Code of Operation and Maintenance, paragraph ISTC-5150." ISTC-5150 contains paragraphs ISTC-5151, ISTC-5152, ISTC-5153, and references requirements ISTC-3500, ISTC-3300, ISTC 3310, and ISTC-3320. Clarify from which paragraphs of the ISTC of the ASME OM Code is relief being requested.
- 2. Section 5.0, "Burden Caused by Compliance," states "Compliance with the quarterly exercising and stroke timing requirements of the Code would require either system modifications to replace these valves with ones of testable design, or to purchase non intrusive test equipment and develop new test methods and procedures." Justify why modifying the system by replacing these valves with a testable design, or purchasing non-intrusive test equipment, is not feasible (i.e., cost, planning or new method and procedure).
- 3. Section 6.0, "Proposed Alternative and Basis for Use," does not provide any operational history (i.e., maintenance and reliability data) or note any failures of solenoid-operated valves 1(2)-2301-032-S0. Provide details of operational history and information regarding any failure of these valves. Also, describe how often the internals for these valves have been replaced or repaired, and note any defects identified during maintenance activities for the fourth 10-year inservice testing interval.
- 4. Provide the details about chances offailures of solenoid-operated valves 1(2)-2301-032 SO during normal and emergency operations (i.e. operational history).
Mr. Michael J. Pacilio Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer (CNO)
Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO RELIEF REQUEST, RV-04, FROM ASME OM CODE ISTC-5150, SOLENOID-OPERATED VALVES ASSOCIATED WITH THE FIFTH INSERVICE TESTING (TAC NOS. ME7981 AND ME7982)
Dear Mr. Pacilio:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated February 15, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12046A334), Exelon Generation Company, LLC submitted a relief request from requirements of the American Society of Mechanical Engineers Operation and Maintenance Code.
Specifically, Code ISTC-5150, Solenoid-Operated Valves for the Quad Cities Nuclear Power Station, Units 1 and 2.
The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on November 15, 2012, it was agreed that you would provide a response by December 10, 2012.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact Carolyn Faria at (301) 415-4050.
Sincerely, IRAI Brenda Mozafari, Senior Project Manager Plant Licensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION PUBLIC LPL3*2 RIF Resource RidsNrrDorlLpl3-2 Resource RidsNrrLASRohrer Resource RidsOgcRp Resource RidsRgn3MailCenter RidsAcrsAcnw_MailCTR Resource RidsNrrDorlDpr Resource RidsNrrPMQuadCities Resource ADAMS AcceSSion No.ML123256112 OFFICE
- NAME DATE LPL3-2/PE CFaria 11 127112 LPL3-2/LA SRohrer 11126/12 LPL3-2/BC MDudek 11/30/12 LPL3-2/PM NDifrancesco 12/03/12 OFFICIAL RECORD COpy